Venturimeter pitot tube pressure tap university of iowa. Ii to determine the metacentric height of a cargo war ship. The standard deviation, for cd was also calculated to be. The main objectives of this experiment is to obtain the coefficient of discharge from experimental data by utilizing venturi meter and, also the relationship between reynolds number and the. Discharge coefficient performance of venturi, standard concentric orifice plate, vcone, and wedge flow meters at small. As team me mb ers fo r the design of air mass flow rate measurement system, we would like to. Energy losses through venturi, orifice, and rotameter. Laboratory practice, where students design and conduct experiments in support of classroom. The three flow meters involved in the experiment are orifice flow meter, magnetic flow meter, and coriolis flow meter. Ce272 fluid mechanics sessional lab manual department of civil engineering ahsanullah university of science and technology. Venturi meter is a device or component which is used for measuring the rate of flow of liquid through pipes. Use the venture meter apparatus to study the effect of area of the flow velocity and fluid pressure. Exam 22 february 2015, questions and answers maae 2300 flow through a sluice gate and hydraulic jump report fluids lab 1adds derivation lab 3 final fluids lab 1 for carleton university maae 2300 laboratory manual version feb 2016 experiment 2 jet pump jet pump lab. Fluid flow is an important part of many processes, including transporting materials from one point to another, mixing of materials, and chemical reactions.
Velocity measurements in the top and bottom pipes are obtained using. If the velocity at any point decreases, the pressure at that point increases due to the conservation of the kinetic energy into pressure energy. Sample formal report a chemical engineering 4903 and 4905 the following sample laboratory formal report is not intended to represent the scope and depth of the projects assigned to students. As the fluid from the entry section of venturi meter flows into the converging section, its pressure keeps on reducing and attains a minimum value p2 when it enters the throat. Tecquipments bernoullis theorem is typical of meters used throughout industry. Determination of coefficient of discharge venturi meter. Venturi meters are used for measuring the flowrate of both compressible and incompressible fluids in a pipeline. A venturi meter allows the flow rate in a pipe to be determined from a pressure differential. It works on the basic principle of bernoullis equation.
The obstruction caused to the flow of liquid at the throat of the venturi produces a local pressure drop in the. The experiment of flow meter measurement is conducted to introduce the students to the three different types of commonly used flow meter in the industry. When comparing the reynolds number to cd for the venturi meter the graph remained relatively linear until there was a drastic. In simplest form, the pitot tube consists of a glass tube, bent at right. Seminar assignments, questions and answers lab experiment. The purpose of this experiment is to measure flow velocities and total pressure heads using pitot tube, also static pressures and static pressure heads. Discharge coefficient performance of venturi, standard. Materials and methods a manometer figure 1, an orifice flow meter figure 2, and a venturi flow meter figure 3 were used to measure the flow rate and pressure change of. The equipment is designed as a self sufficient unit. Using bernoullis equation, pressure and flow rate were calculated, and static and dynamic pressure were identified. Me 4880 experimental design lab centrifugal pump performance experiment instructors. Laboratory experiment on venturi meter and orifice meter uk essays. Lab objectives understand operation of a dc motor analyze fluid flow using centrifugal pump venturi flow meter.
The venturitube has a converging conical inlet, a cylindrical throat, and a. It is an edited student report and contains some incorrect statements and formatting, and describes questionable experimental procedures. For two different water flow rates do the following. Construction and specification of venturi meter venturi is an example for restriction type flow meter. Conclusion in this experiment cd, the coefficient of discharge, was calculated for the venturi meter. Objectives the objectives of this experiment were to gain knowledge on pressure and flow measuring devices, and to calibrate an orifice flow meter and a venturi meter. Figure 1 venturi meter h5 the venturi meter has three main. Design of a laboratory setup to measure air mass lilow rate.
Energy losses through venturi, orifice, and rotameter flowmeters. The main objectives of this experiment is to obtain. The objectives of this experiment were to gain knowledge on pressure and flow measuring devices, and to calibrate an orifice flow meter and a venturi meter. The velocity of the fluid for both the orifice and venturi meters and can be seen in the appendix section of this report. The test unit will be introduced in the laboratory before the experiment by the relevant. From consideration of continuity between the mouth of the venturi of area a 1 and the throat of area a 2. Pdf che241 lab report flowmeter measurement apparatus. Experiment 1 experiment 1 flow through a venturi meter. Pdf experimental investigation of the installation. In simple language, this is defined as the sum of pressure energy, kinetic energy per unit volume and potential energy per unit volume equal in the same. Flow through venturi meter background and theory introduction flow meters are used in the industry to measure the volumetric flow rate of fluids.
Venturimeter is the most widely used device to measure the discharge through the pipe. Lab report for venturi meter free download as pdf file. Philip mogbock 100884650 connor boyd 100879736 shawn taylor 100885475 march 6 th, 20 summary the purpose of this lab is achieve great understanding of bernoullis equation and its applications in flow analysis. In this post the effect of venturi meter and orifice plate on the fluid flow will be disciussed and complete work will be presented in the form of report. Flow measurement by venturi and orifice meters objectives. Che241 lab report flowmeter measurement apparatus fm101 2015. Bsen 3310 lab 2calibration of orifice flow meter and. Flow through venturi meter theory sakshat amrita virtual lab. Additionally, this laboratory will provide an introduction to piv analysis, using an epiv system with a stepup model. To find the coefficient of discharge for orifice meter.
The flow is determined using a sudden enlargement, venturi meter, orifice plate, elbow and a rotameter. To determine the coefficient of discharge of the orifice meter 1. The third and final type of obstruction meter is the venturi, named in honor of giovanni venturi 17461822, an italian physicist who first tested conical expansions and contractions. Venturi flume for measuring water in open channels, in order that those in practical need of such a device may know of its existence. The model me8598 venturi apparatus includes the connectors and tubing needed for doing the experiment with either air or water. A simple, inexpensive venturi experiment applying the. Venturimeter is the most widely used device to measure the discharge. More specifically, this simple venturi meter, constructed from materials available at a local hardwareauto parts store, was characterized by determining the venturi coefficient and the permanent pressure loss. They consist of short length of pipe shaped like vena contracta, or the portion with the least cross sectional area, which fits into a normal pipeline. All pressure taps on the pipes, venturi meters, and. Aim of this experiment is to compare the behavior of ideal fluid and real fluid.
A venturi is a convergingdiverging nozzle of circular crosssection. Set both the apparatus flow control and bench supply valve to approximately one third their fully open positions. Use the bernoullis equation to compare the behavior of ideal and real fluid. However, it has many more pressure tappings, connecting to water manometers, which allow full study of the pressure distribution along the convergentdivergent passage. Object the purpose of this experiment is to study some of the famous instruments used in flow measurements. Fm 308 flow measurement by venturi and orifice meter objectives.
In your laboratory reports must have the followings. To find the coefficient of discharge for oririce meter. Venturi meter experiment physics laboratory duration. For better comparisons, two separate trials were analyzed and venturi coefficients for both were computed. A venturi narrows the diameter of the pipe for a short duration, converting pressure head to velocity head. The original, or classical, venturi was invented by a u. Experimental investigation of the installation effects on the venturi flow meter performance conference paper pdf available june 2000 with 2,477 reads how we measure reads.
Its value varies slightly from one meter to another, and, even for a given meter it may vary slightly. Flow rate equation for venturi and orifice with discharge coefficient. The venturi is widely used particularly for large volume liquid and gas flows since it exhibits little pressure loss. Department of mechanical engineering venturi meter. Jan 25, 2012 for the love of physics walter lewin may 16, 2011 duration. Flow through a venturi meter summary this experiment familiarized students with measuring pressure using manometers and the theories and calculations of around it. Lab procedure venturi measurements summary of equations and calculation way.
Venturimeter are used to measure the velocity of flow of fluids in a pipe. Fluid mechanics lab abstract flow rate is a common measurement which often needs to be performed. To find the coefficient of discharge for venturi meter. Department of mechanical engineering venturi meter objective.
The pressure along the meter is obtained using the 11 pressure taps at the locations shown on the diagram. In short, the apparatus allows the following experiment to be carried out. Bacalso avenue, cebu city chemical engineeing department final report che lab 1 title of experiment juphil a. Differential pressure type flow meters head flow meters measure flow rate by introducing a constriction in the flow. In this experiment the flow k and discharge cd coefficients of a venturi meter will be assessed by comparing the real discharge measured in the experiment with the theoretical discharge calculated by deriving venturi discharge formula from bernoulli and continuity equations. Reynolds number demonstration and type of flow laminar or turbulent are studied in experiment no. It may be noted that in the usual form of venturi meter intended for flow measurement, pressure tappings are made only at the entrance and at the throat, as these two readings suffice to measure the discharge. Bsen 3310 lab 2calibration of orifice flow meter and venturi. This experiment is important educationally because it requires. Differential pressure type flow meters head flow metersmeasure flow rate by introducing a constriction in the flow.
The mass flow rate can be measured using the hydraulics. Conclusion in this experiment cd the coefficient of discharge. However due to a problem with the apparatus and a constantly fluctuating venturi meter, a camera was used to take a photo. Fm 308 flow measurement by venturi and orifice meter. Venturimeter lab report fluid mechanics hydraulic engineering. A schematic of the venturi meter is shown on the diagram at the end of the procedure. Sep 30, 2016 determination of coefficient of discharge venturi meter experiment. The whole assembly of venturi meter, manometer tubes, scale and manifold is supported on a base mounted on adjustable screwed feet. Calculate the coefficient of discharge from experimental data for a venturi meter. Venturi and orificemeters are the most commonly used nowsensing elements in. The experiment was carried out per the instructions outlined in the course manual. The fluid whose flow rate is to be measured enters the entry section of the venturi meter with a pressure p1. Detailed information about these components is given in this chapter. The venturi meter experiment is initiated by closing the valves on the.
Determine the relationship between reynolds number and the coefficient of discharge. Introduction the purpose of this experiment is to perform and. The inlet diameter equals d 26 mm and the throat diameter d 16 mm. Venturi meterconstruction, working, equation, application.
Venturi meter and orifice plate effects are two main and very important phenomenas in fuild mechanics sub field of mechanical engineering. Connect downstream end of apparatus to a plastic tube, the free end of which is directed into the hydraulic bench for measuring discharge from venturi. To find the water flow rate using the venturi meter and the pressure distribution along the meter. Venturi meter apparatus with using venture meter, which is procured from tecquipment company, it is possible to see and measure the complete static head distribution along a horizontal venture tube, figure 1. Conclusion in this experiment cd the coefficient of.
Given a venturi meter, cv, the venturi coefficient can be determined to compare the actual and ideal values as per bernoullis predictions, for a volume flow rate. The venturi flow meter consists of a streamlined contraction and a streamline expansion as shown the diagram. Venturi meter a venturi meter is a tube with a constricted throat that increases velocity and decreases pressure see figure 1. Venturi meter a venturi meter is a tube with a constricted throat that increases velocity and. The pressure drop associated with each meter is measured directly from the. However, for smaller pipes orifice meter is a suitable choice. Experiment 1 report flow through a venturi meter group members. In venturi, pressure energy pe converted into kinetic energy ke to calculate flow rate discharge in a closed pipeline. Furthermore, it is hoped that the construction of larger sizes of venturi flumes than were tested in the laboratory will be encouraged thereby and that they can be calibrated. Venturi meter and orifice meter are the commonly used flow meters for measuring massvolumetric flow rate or velocity of the flowing fluid. Cd for the venturi meter decreased as the flow rate decreased with each trial. Nov 20, 2016 venturi meter and orifice plate lab report venturi meter and orifice plate effects are two main and very important phenomenas in fuild mechanics sub field of mechanical engineering.
In this experiment, you will investigate fluid flow in a pipe network and will explore several methods rotameter, orifice and venturi meters for measurement of the fluid flow rate. A simple, inexpensive venturi experiment applying the bernoulli. This experiment is important educationally because it. To find the coefficient of discharge for vcnturi meter. Lab report for venturi meter business nature scribd.
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